CVE-2021-22895

medium

Published — · Modified —

CVSS v3

—

CVSS v2

—

VIR risk

5.5

Description

Nextcloud Desktop Client before 3.3.1 is vulnerable to improper certificate validation due to lack of SSL certificate verification when using the "Register with a Provider" flow.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-22895

OS impact

OS	Version	Status	Fixed in
arch		fixed	`3.1.3-1`
debian	bookworm	fixed	`3.3.1-1`
debian	bullseye	fixed	`3.1.1-2+deb11u1`
debian	forky	fixed	`3.3.1-1`
debian	sid	fixed	`3.3.1-1`
debian	trixie	fixed	`3.3.1-1`

References

https://security-tracker.debian.org/tracker/CVE-2021-22895

Verify integrity in audit chain (admin only). AS-IS.